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The Best Episodes of Blue Lights

Every episode of Blue Lights ranked from best to worst. Let's dive into the Best Episodes of Blue Lights!

Binge this in 18h 40m•Peaking at 8.8/10

Follows rookie police officers working in Belfast, a city in which being a frontline response cop comes with unique pressures and dangers.

Airs on
BBC One
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Seasons4

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Episode Rankings

  1. #1 Fan Favorite
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    Blue Lights Season 3 Episode 5 - Ordo ab Chao
    8.8/10(566 votes)

    #1 - Ordo ab Chao

    S3:E5

    Grace and Sean bring in George for questioning, leading Morgan to take drastic measures to silence him. Shane faces an unexpected situation on a routine call-out.

    Director:Unknown
    Writer:Unknown

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  2. Blue Lights Season 1 Episode 5 - The Q Word
    8.7/10(858 votes)

    #2 - The Q Word

    S1:E5

    Mo’s side deal goes ahead, risking his relationship with his father. Tommy’s firearms exam is brought forward, and Stevie tries to convince Grace to come back to work.

    Director:Gilles Bannier
    Writers:Adam Patterson, Declan Lawn

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  3. Blue Lights Season 3 Episode 6 - World of Our Own
    8.7/10(655 votes)

    #3 - World of Our Own

    S3:E6

    Grace and Sean are under serious threat, while Lindsay's testimony exposes the Ginleys. Colly takes a risk to go after Morgan, and Fogerty decides Tina is no longer useful.

    Director:Unknown
    Writer:Unknown

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  4. Blue Lights Season 1 Episode 6 - Love The One You're With
    8.5/10(844 votes)

    #4 - Love The One You're With

    S1:E6

    The team work together after the shooting. Stevie clashes with the spooks, Mo learns the truth about his father, and Grace accepts that she might break her promise to Angela.

    Director:Gilles Bannier
    Writers:Adam Patterson, Declan Lawn

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  5. Blue Lights Season 2 Episode 6 - The Loyal
    8.5/10(652 votes)

    #5 - The Loyal

    S2:E6

    Mount Eden descends into chaos as Grace tries to get Henry out from under Lee’s control. Happy finally learns the truth.

    Director:Unknown
    Writer:Unknown

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  6. Blue Lights Season 1 Episode 4 - Full Moon Fever
    8.3/10(818 votes)

    #6 - Full Moon Fever

    S1:E4

    The police ombudsman investigates the team after a disastrous night shift. Helen uncovers a scandal, while a crisis at home has Grace doubting her career choice.

    Director:Gilles Bannier
    Writers:Adam Patterson, Fran Harris, Declan Lawn

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    The 20 WORST Episodes of Blue Lights

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  7. Blue Lights Season 2 Episode 5 - Where I Want to Be
    8.3/10(547 votes)

    #7 - Where I Want to Be

    S2:E5

    Annie’s job is on the line. As Lee consolidates power, Stevie and Grace are thrown back together on a response call, with terrible consequences.

    Director:Unknown
    Writer:Unknown

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  8. Blue Lights Season 3 Episode 2 - Skipper
    8.3/10(514 votes)

    #8 - Skipper

    S3:E2

    A car crash has traumatic consequences for Aisling, while the fallout creates a deadly situation for the section. Grace turns to child protection to try and help Lindsay.

    Director:Unknown
    Writer:Unknown

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  9. Blue Lights Season 3 Episode 4 - The Parting Glass
    8.2/10(505 votes)

    #9 - The Parting Glass

    S3:E4

    Grace offers up a secret about her own past in an attempt to connect to Lindsay. Aisling’s erratic behaviour forces Tommy to make a heartbreaking decision.

    Director:Unknown
    Writer:Unknown

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  10. Blue Lights Season 2 Episode 3 - Love Knows
    8.0/10(568 votes)

    #10 - Love Knows

    S2:E3

    As tensions grow in Mount Eden, a response call forces Stevie to confront his past. Annie deals with the consequences of an impulsive decision.

    Director:Unknown
    Writer:Unknown

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  11. Blue Lights Season 2 Episode 4 - The Stamp of Nature
    8.0/10(550 votes)

    #11 - The Stamp of Nature

    S2:E4

    Lee is the new boss in Mount Eden. Under pressure from Canning to get results, Shane leads Tommy into danger.

    Director:Unknown
    Writer:Unknown

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  12. Blue Lights Season 4 Episode 2 - Numbers
    8.0/10(71 votes)

    #12 - Numbers

    S4:E2

    In the wake of the attack on Amira, Grace’s determination puts her in danger, while Mo spirals further with violent consequences.

    Director:Unknown
    Writer:Unknown

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  13. Blue Lights Season 1 Episode 3 - The Fear
    7.9/10(772 votes)

    #13 - The Fear

    S1:E3

    A paramilitary-style assault case has Grace determined to bring the McIntyres to their knees. When Gordy pulls away from Angela, she becomes desperate for help.

    Director:Gilles Bannier
    Writer:Fran Harris

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  14. Blue Lights Season 2 Episode 2 - Iceberg
    7.9/10(576 votes)

    #14 - Iceberg

    S2:E2

    A loyalist gangland feud turns up the pressure on the section. Annie makes an impetuous decision on a night out.

    Director:Unknown
    Writer:Unknown

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  15. Blue Lights Season 3 Episode 3 - The Bird
    7.9/10(478 votes)

    #15 - The Bird

    S3:E3

    Grace and Shane push boundaries for Lindsay’s sake as a threat closes in. Aisling and Tommy respond to a call-out where things are not as they seem, with unexpected consequences.

    Director:Unknown
    Writer:Unknown

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  16. Blue Lights Season 2 Episode 1 - This Too Shall Pass
    7.8/10(668 votes)

    #16 - This Too Shall Pass

    S2:E1

    A year into the job, the team are faced with a drug-fuelled crime wave that leads them into a loyalist estate. A violent clash puts Stevie and Grace’s working relationship at risk.

    Director:Unknown
    Writer:Unknown

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  17. Blue Lights Season 3 Episode 1 - The Party
    7.8/10(559 votes)

    #17 - The Party

    S3:E1

    The arrest of young drug dealer Sandy McKnight begins to expose a criminal conspiracy involving every level of Belfast’s society, from wealthy businesswoman Dana Morgan to vulnerable teenager Lindsay Singleton.

    Director:Jack Casey
    Writer:Unknown

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  18. Blue Lights Season 1 Episode 2 - Bad Batch
    7.7/10(804 votes)

    #18 - Bad Batch

    S1:E2

    The team scramble to deal with a bad batch of drugs while the McIntyres try to cover their tracks. Annie receives terrifying news that has her wondering who she can trust.

    Director:Gilles Bannier
    Writers:Adam Patterson, Declan Lawn

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  19. Blue Lights Season 1 Episode 1 - The Code
    7.6/10(987 votes)

    #19 - The Code

    S1:E1

    PSNI probationer Grace promises to help Angela, whose son has fallen in with a notorious gang. But with undercover agents watching, will she be able to keep her word?

    Director:Gilles Bannier
    Writers:Adam Patterson, Declan Lawn

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  20. Blue Lights Season 4 Episode 1 - Eyes
    7.5/10(120 votes)

    #20 - Eyes

    S4:E1

    The section is challenged by escalating tensions at a community event, while the investigation into Dana Morgan’s drug partnership with Tina McIntyre falters.

    Director:Unknown
    Writer:Unknown

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Best Episodes Summary

"Ordo ab Chao" is the best rated episode of "Blue Lights". It scored 8.8/10 based on 566 votes. Directed by Unknown and written by Unknown, it aired on 10/27/2025. This episode scored 0.1 points higher than the second highest rated, "The Q Word".